Profile feedback build for binutils

From: Andi Kleen <andi at firstfloor dot org>

To: binutils at sourceware dot org

Date: Sun, 12 Jun 2011 16:52:55 -0700

Subject: Profile feedback build for binutils

I noticed the binutils Makefiles have some support for a profile
feedback build. But it's not documented anywhere and all the related
targets I tried spew errors on Linux. Is that supposed to work?
Thanks,
-Andi